Home / 85,755,578.40-128,605,723.92-28,234,154.16

Finding the Fourth Proportional to 85,755,578.40, 128,605,723.92 and 28,234,154.16

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Solution

The fourth proportional to 85,755,578.40, 128,605,723.92 and 28,234,154.16 is: 42,342,129.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,755,578.40 : 128,605,723.92 = 28,234,154.16 : x
  2. Step 2: Convert to fraction form
    85,755,578.40/128,605,723.92 = 28,234,154.16/x
  3. Step 3: Cross multiply
    85,755,578.40x = 128,605,723.92 × 28,234,154.16
  4. Step 4: Simplify right side
    85,755,578.40x = 3,631,073,835,015,679.50
  5. Step 5: Solve for x
    x = 3,631,073,835,015,679.50/85,755,578.40
  6. Step 6: Final answer
    x = 42,342,129.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.